<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div>
        <ul>
            <li id="l1">张三</li>
            <li id="l2">李四</li>
            <li>王五</li>
            <a href="#" name="521" id="" class="a1">尚硅谷</a>
            <span>嘿嘿嘿</span>
        </ul>
    </div>


    <a href="#" title="a2">百度</a>
    <span>嘻嘻嘻</span>

    <div id="d1">
        <span>哈哈哈</span>
    </div>
    <p id="p1" class="p1">呵呵呵</p>
</body>
</html>